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3dde10adaa
Most tools used for compliance and SBOM generation use SPDX identifiers This change brings us a step closer to an easy SBOM generation. Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
116 lines
3.3 KiB
C
116 lines
3.3 KiB
C
/****************************************************************************
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* arch/risc-v/src/fe310/fe310_start.c
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <nuttx/init.h>
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#include <arch/board/board.h>
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#include "fe310_clockconfig.h"
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#include "fe310.h"
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#include "chip.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#ifdef CONFIG_DEBUG_FEATURES
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# define showprogress(c) riscv_lowputc(c)
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#else
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# define showprogress(c)
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#endif
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/****************************************************************************
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* Public Data
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: __fe310_start
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****************************************************************************/
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void __fe310_start(void)
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{
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const uint32_t *src;
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uint32_t *dest;
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/* Clear .bss. We'll do this inline (vs. calling memset) just to be
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* certain that there are no issues with the state of global variables.
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*/
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for (dest = (uint32_t *)_sbss; dest < (uint32_t *)_ebss; )
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{
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*dest++ = 0;
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}
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/* Move the initialized data section from his temporary holding spot in
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* FLASH into the correct place in SRAM. The correct place in SRAM is
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* give by _sdata and _edata. The temporary location is in FLASH at the
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* end of all of the other read-only data (.text, .rodata) at _eronly.
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*/
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for (src = (const uint32_t *)_eronly,
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dest = (uint32_t *)_sdata; dest < (uint32_t *)_edata;
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)
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{
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*dest++ = *src++;
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}
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/* Setup PLL */
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fe310_clockconfig();
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/* Configure the UART so we can get debug output */
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fe310_lowsetup();
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showprogress('A');
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#ifdef USE_EARLYSERIALINIT
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riscv_earlyserialinit();
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#endif
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showprogress('B');
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/* Do board initialization */
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fe310_boardinitialize();
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showprogress('C');
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/* Call nx_start() */
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nx_start();
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/* Shouldn't get here */
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for (; ; );
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}
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